forger User Manual

forger User Manual
Javier Edo Meseguer
v. 1.4
Contents
1 Overview
1.1 Interface Overview . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Viewport Overview . . . . . . . . . . . . . . . . . . . . . . . .
1.3 Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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2 Navigation
2.1 Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 Stylus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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3 Preferences
3.1 Display .
3.2 Controls
3.3 Colors .
3.4 Others .
4 File
4.1
4.2
4.3
4.4
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I/O
iTunes File Sharing
Save / Export . . .
Load / Import . . .
Dropbox . . . . . .
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5 Tools
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5.1 Tool Properties . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.2 Tool Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6 Mesh Properties
6.1 Geometry . .
6.2 Remeshing . .
6.3 Symmetry . .
6.4 Masks . . . .
6.5 Visibility . . .
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4
CONTENTS
6.6
6.7
Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Other . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7 Layers
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7.1 Sculpt Layers . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
8 Materials
8.1 Creating Materials . . . . . . . . . . . . . . . . . . . . . . . .
8.2 Editing Materials . . . . . . . . . . . . . . . . . . . . . . . . .
8.3 Using materials . . . . . . . . . . . . . . . . . . . . . . . . . .
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Chapter 1
Overview
1.1
Interface Overview
The most important part of the interface from version 1.4 onwards is the sidebar, this sidebar has shortcut actions to the most common actions (changing
tools, adjusting tools settings, button shortcuts) and sliding it towards the
viewport will display the menus.
Note that the placement of this sidebar (on left or right) will depend on
the users handedness setting in the preferences menu.
1.2
Viewport Overview
5
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CHAPTER 1. OVERVIEW
1. Symmery settings. Displays the selected mesh symmetry settings.
2. Frame. Makes the camera frame the selected mesh.
3. Current tool badge. Displays the current brush selected.
4. Tool Shortcuts. The tool shortcuts found on the sidebar can be
customized to have shortcuts to the tools that the user likes the most.
By tapping and holding these a menu will appear that will allow users
to change the shortcuts.
5. Selected mesh. This is the selected mesh.
6. Tool size. This will adjust the current tool’s size, note that this may
not apply to a tool (ie: a Translate Tool) and this slider may not
appear.
7. Tool strength. This will adjust the current tool’s strength, note that
this may not apply to a tool (ie: a Translate Tool) and this slider may
not appear.
8. Alternate tool function. This will trigger the alternate mode of a
tool, it depends on the tool but most of the time the tool will do the
opposite (ie: push/pull etc).
9. Smooth brush shortcut For as long as this button is pressed, if forger
is in a Sculpting context, it will swap out the current tools brush for
the smooth brush.
10. Selected mesh name. Displays the selected mesh name, if there is
no selection it will display ”- no selection -”.
11. Cursor. This is the cursor, by displaying the size of the cursor it gives
a hint of how much area will be affected when sculpting on a mesh.
1.3
Main Menu
1. File. Allows users to load and save files.
2. Tools. Choose between all available tools and adjust their settings.
3. Mesh Properties. Runs several actions at the mesh level.
4. Outliner. Lists all available objects in the scene and allows users to
control their visibility.
1.3. MAIN MENU
7
5. Material Editor. Displays all existing materials in the scene, and
allows users to adjust them.
6. Preferences. Lets users customize forger to their needs.
7. Share. Allows users to share their creations through twitter/email.
8. Tutorial. Displays a very short tutorial explaining the usage of the
app.
9. Help. Displays this help, provides access to the twitter account of the
app and the about section.
8
CHAPTER 1. OVERVIEW
Chapter 2
Navigation
2.1
Navigation
Orbit moving two fingers in the same direction will make the camera orbit
around the selected object.
Zoom moving two fingers in opposite directions will move the camera closer/further
away from the selected object.
Pan moving three fingers in the same direction will offset the camera from
the focused object.
Sculpt If a mesh was selected in the outliner (if selected, its name will be
displayed in the bottom center of the screen) the user will be able to
deform it by pressing it with one finger.
Frame press the home button in the viewport to frame selected object.
Snap while orbiting, press the smooth brush shortcut to snap the rotation
to the closest 90 degree angle in all axis.
2.2
Stylus
Forger supports three pressure sensitive stylus. In order to enable their
pressure sensitivity and custom button actions go to the Preferences menu
and tap on the one you want enabled. A pressure sensitivity widget will
appear on the viewport and the stylus will be listed with a checkmark next
to it if pressure sensitivity is enabled.
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CHAPTER 2. NAVIGATION
Wacom Creative Stylus In order to link to this stylus, make sure you have
bluetooth enabled and press any of its buttons to start the bluetooth
discovery process, then press on ”Wacom Stylus” under the preferences
menu and it should list all bluetooth devices available, select your stylus
from this list (commonly named ”Wacom Creative Stylus”) if it doesn’t
have already a checkmark next to it.
Button 0 on this stylus can be used to orbit.
Button 1 on this stylus can be used to pan.
Pogo Connect In order to link to this stylus, make sure you have bluetooth
enabled and press any of its buttons to start the bluetooth discovery
process, then press on ”Pogo Connect” under the preferences menu.
Button 0 on this stylus can be used to orbit.
JaJa Stylus This stylus will require you to give it permissions to use the
microphone as it works via microsounds as opposed to the other bluetooth enabled stylus. In order to be able to use it make sure microphone
access is enabled for forger, press any button on the stylus to turn it
on and press on ”JaJa Stylus” under the preferences menu.
Button 0 on this stylus can be used to orbit.
Button 1 on this stylus can be used to pan.
Chapter 3
Preferences
The forger preference system will remember the users preferences between forger sessions. The preferences can be edited through the preferences
menu.
In addition to the visible preferences forger also remembers the users tool
preferences. i.e. Brush sizes, strength, ...
3.1
Display
Viewport visibility options forger allows different viewport visibility combinations.
3.2
Controls
Free Orbit Style: controls the orbiting style, when disabled, the orbiting
style will be turntable (the classic navigation for all 3d applications), when
11
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CHAPTER 3. PREFERENCES
enabled the orbiting style will be a ”Rolling Ball” free style orbiting, this
navigation style might feel more natural to some users for sculpting as it has
no restrictions in the way it handles orbiting.
Left Handed, this mode will change the layout of the app to display the
sidebar and menus on the right, having this disabled will mean that the app
is in Right Handed mode and thus the sidebar and menus will be on the left.
This may seem counter intuitive but is actually done on purpose so the hand
that users don’t use as much is the one they will use to change brushes and
the other hand can stay on top of the model.
Hide Touches: Enable this option to hide the touch images that appear
when there are multiple touches. This option is merely to keep the viewport
cleaner and less distracting when users feel more confident with the app.
3.3
Colors
Allows users to adjust their color preferences.
Background Color Controls the background color (clear color) of the viewport.
Cursor Default Controls the usual color of the cursor, when there is no
shortcut pressed.
Cursor Smooth Controls the color of the cursor, when the smooth shortcut
button is pressed.
Cursor Alternate Controls the color of the cursor, when the alternate
shortcut button is pressed.
3.4
Others
Display Memory Chart this option will add a little widget to the viewport that will display a pie chart representing the memory taken up by forger,
all the other apps and the available memory.
Display Pressure Widget this option will add a little widget to the
viewport that will display stylus pressure if a pressure sensitive stylus is
being used.
3.4. OTHERS
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Please note that the operating system needs some memory left to work so
it is recommended that there is some memory left to the OS to work with.
The color representation for this widget is green for free memory, blue for
forger and red for the rest of the background apps. It is recommended that
you close all background apps that you can.
Show Memory Warnings by default forger shows memory warnings
whenever it receives one, but you can disable this from the menu, it is not
recommended that you do so unless you are in an old device and certain that
the memory limit will not be reached.
Copy Autosave To Documents forger keeps up to three autosave files,
you can copy these files to the documents folder by pressing on it.
Reset All Settings this will reset all settings to factory settings, including all brushes preferences.
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CHAPTER 3. PREFERENCES
Chapter 4
File I/O
forger allows full interoperability with other platforms and 3D packages by
allowing users to import/export models from/to it at any given time.
In addition to working from the basemeshes supplied with forger , the user
can export other meshes from any traditional desktop 3D package, forger lets
users import polygonal geometry files in the very common ”Wavefront OBJ”
format.
forger also has its own file format that can save multiple geometry files,
masks, symmetry, selection, tool preferences and user preferences in one single file.
4.1
iTunes File Sharing
Users can use iTunes file sharing for moving files in/out of forger , this feature
can be used any time via wifi if iTunes syncronization is enabled for the device
or via cable if it is not.
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CHAPTER 4. FILE I/O
In the applications tab in the iPad syncing preferences, there are two sections, in the lower section iTunes lets users move files from/to connected
devices.
After adding files through the iTunes file sharing interface, models will
appear in the file menu ready to import.
4.2
Save / Export
forger creates an automatically saved temporary file every time the app is
closed so the user can continue working on it at later time, but this file will
be overwritten the next time the app is closed, in order to really save the
work the user will have to do this manually.
Save
Allows the user to save forger scene files using the internal forger
file format.
Save: Will overwrite the last opened file.
Save Incremental: Will increment the version number of the scene
name.
Save as...: Will prompt an input alert so the user can specify the
name that will be used once saved.
Export
Allows the user to export Wavefront OBJ files, please note that
all of these actions will only operate on the selected model.
4.3. LOAD / IMPORT
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Export: Will overwrite any model file with the same name as the
selected mesh in the Documents folder.
Export Incremental: Will increment the version number of the
mesh exported.
Export as...: Will prompt an input alert so the user can specify the
name that will be used once exported.
Email...: Will open an email composer dialog with the selected
mesh added as an OBJ attachment.
4.3
Load / Import
The file menu allows users to import/load scene files or Wavefront OBJs to
the scene by simply pressing on their names.
The file menu
directory.
displays all known files from the root of the Documents
There is also the possibility to add any of the basemeshes from the file
menu or create a new scene by pressing the add
button at the top right
of the menu.
In addition to this, forger allows users to import scenes or models directly
from the Apple’s mail app, just by pressing on the attachments and selecting
open with forger.
4.4
Dropbox
Dropbox is integrated into forger and users can save and load files directly
to/from it.
forger uses the app folder permissions and will create its own subfolder
inside the /Dropbox/Apps/ directory when an account is first linked with
it, this is the most secure access type as it only allows forger to access files
within its own subfolder.
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CHAPTER 4. FILE I/O
Users can switch to the Dropbox view by pressing on the Dropbox icon
inside the File Menu, if it’s the first time this gets used in the device and
the app isn’t liked to a Dropbox account the app will prompt asking for a
Dropbox username and password.
Once the account is linked forger will display a list of the files in the app’s
Dropbox folder or any selected subfolder from this one. Note that files that
are cached locally in the device will display in a stronger color than files that
are not cached, this is to help indicate that a file that displays as not cached
might need to download prior to being opened, when pressing on a file that
is not cached locally a progress indicator will display. Once the file is done
downloading it can be pressed again to open.
Users can save files to the active Dropbox folder by pressing on the Save
button on the menu’s toolbar (at the bottom).
Users can also create new subdirectories by pressing on the
button.
In order to unlink the app from Dropbox, press the cross icon on the menu’s
toolbar.
Chapter 5
Tools
Brushes are the tools used to modify models in forger . Access to the brush
menu by pressing the brush
5.1
button on the menu.
Tool Properties
Each brush has different strength and size, the strength will define how
much the selected brush affects the geometry.
The size of the brush works in screen units, meaning that the same brush
size can affect different amounts of vertices depending on how close the camera is to the selected model. This is actually simpler than it may seem and
it will feel natural to the user.
5.2
Tool Types
forger comes with ten different brushes, each brush has two different modes,
and its easy to get confused, here is a small breakdown of each brush effect
for reference:
Standard pushes vertices in the direction of the average normal.
Alternate: pushes vertices in the opposite direction of the area
normal.
Clay moves vertices with a nice clay-like effect, filling holes and building up
in the direction of the average normal.
Alternate: works in the opposite direction of the area normal.
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CHAPTER 5. TOOLS
Flatten pushes vertices over the average plane defined by the average point
position of the affected vertices and the area normal.
Alternate: same effect.
Move Moves vertices in screen coordinates.
Alternate: pushes vertices along the area normal.
Layer Pushes vertices up to a per stroke limit in the direction of the area
normal.
Alternate: works in the opposite direction of the area normal.
Inflate Pushes vertices in the direction of their own normal.
Alternate: works in the opposite direction.
Pinch Pushes affected vertices closer to the center of the stroke.
Alternate: Pushes vertices away from the center of the stroke.
Scrape Pushes vertices onto the average plane defined by the positions of
the affected vertices and the area normal.
Alternate: same effect.
Smooth Averages the position of the affected vertices with their adjacent
ones.
Alternate: same effect.
Mask Marks affected vertices as masked, all brushes will have less or no
effect on masked areas.
Alternate: unmasks affected areas.
PaintSelection Allows the user to select faces, specifying what will be affected later by mesh operations.
Alternate: deselects faces.
TranslateTool Allows the user to move models around.
RotateTool Allows the user to rotate models around.
ScaleTool Allows the user to scale models uniformly. Note that nonuniform scaling is *not* supported at the currently, this is planned to be
supported in the future, nonuniform scaling requires computionally expensive operations which are better avoided on these devices, a solution
is being worked on at the moment.
Chapter 6
Mesh Properties
The mesh properties menu allows users to apply different operations on
button.
the selected mesh. To open this menu press on the mesh
Please note that this menu will not open if there is no mesh selected, to
select a mesh, go to the outliner and tap on its name.
6.1
Geometry
This submenu controls the amount of detail that can be sculpted onto a
mesh, the higher the number of faces/vertices of a model, the more detail
can that can be sculpted.
Pressing Subdivide will increase the resolution of the model by multiplying the number of faces by four, whilst keeping the previous (coarser) version
of the mesh as another sublevel, note that it is possible to step up/down
existing levels at any time.
Note that before subdividing forger will check if there is enough memory
available and will bail out if it finds that there is not enough, if this happens
and the mesh resolution is still at a moderate level, closing background apps
might help.
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CHAPTER 6. MESH PROPERTIES
When working with multiple resolution models users will find easier to
step down to coarser levels to do big form changes and step up to higher
ones to do finer detail edits. forger will automatically propagate any changes
(positions, masks, visibility) done to each level to other levels.
If a model has multiple resolutions, users will be able to step up/down one
level at a time by using the Sublevel slider.
Sublevels can be removed by pressing the Delete Highest and Delete
Lowest buttons, note that if you attempt to remove the active level these
buttons will not do anything. Deleting unnecessary levels can help out freeing
memory.
If a mesh was previously subdivided on another software and imported into
forger their sublevels can be rebuilt by pressing Rebuild Sublevel. This
button will rebuild one sublevel at a time and it’s safe to press until there
are no more levels left to rebuild.
6.2
Remeshing
This feature allows users to sculpt freely allowing them to re-create their
models topology on the fly as they work, it’s meant to be used mainly for
concept sculpting as the generated meshes aren’t topologically ideal due to
their triangle only nature.
The resolution slider defines the resolution of the intermediate volume used
for remeshing, the higher the value the more accurate it will be and the slower
the process will be.
6.3
Symmetry
This submenu controls the way that forger deals with symmetry on the selected model.
In order to sculpt a model symmetrically, choose an axis and any edits that
are done on one side of the mesh will be replicated on the other side of the
mesh along that axis, this assumes that the originating mesh is somewhat
symmetrical. If the original mesh was symmetrical but has been posed, read
on for symmetrical topology support.
6.4. MASKS
23
There is support for posable symmetry, when working with meshes that
have been posed in other softwares, users can still work on them symmetrically provided that these meshes are topologically symmetrical, in order
to enable this, go to the lowest sublevel, select (with the SelectBrush) only
two contiguous adjacent faces along their topological axis and press Scan
Topological if this is successful, users now should be able to set the mirror
axis to T(tangent) and sculpt symmetrically even if the model is posed.
6.4
Masks
As noted before, masks define how much tools can affect certain areas.
From this submenu the user can clear or invert the masked areas on the
selected model. Clear will remove the mask. Invert will mask out unmasked
areas and unmask masked areas.
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CHAPTER 6. MESH PROPERTIES
6.5
Visibility
There is also support for partial mesh visibility, this can help users when
trying to work on areas hard to reach, it can also give them a quicker/smoother
response on denser meshes, or simply concentrating in certain areas.
In order to use this feature, the user will need to select the desired faces
and press Hide Unselected. This will hide the unselected faces.
Similarly, the Invert button will change invert the visibility on the selected
model and the Reset button will show the entire model.
6.6
Selection
The selection can be controlled by the following buttons:
• Clear: will clear the selection on the model.
• Invert: will invert the selection on the model.
• Grow: will increment the selection, adding adjacent, unselected faces
to it.
• Shrink: will decrement the selection, removing border, selected faces
from it.
6.7. OTHER
6.7
25
Other
Bake Transform will apply any transformations made onto the model.
Note that this action will flush the undo history.
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CHAPTER 6. MESH PROPERTIES
Chapter 7
Layers
7.1
Sculpt Layers
Sculpt layers allow working in a non destructive manner by saving everything
done in them as offsets from the main mesh.
Layers are locked to a certain mesh sublevel when created this means that
layers are only editable whilst their matching mesh sublevel is active and
deleting a sublevel will delete its associated layers.
There is a number of actions that can be run on layers such as:
• Enable/Disable: will make them affect or not affect the mesh they
are attached to. Layers can be enabled or disabled by pressing on the
visibility on each layer.
• Lock/Unlock: locking a layer will stop any actions from affecting the
mesh and thus the layer if is the active one. Layers can be locked or
unlocked by pressing on the lock icon that appears on each layer.
• Intensity: this can be used to great benefit to adjust how much of this
layer will affect the mesh after it has been sculpted. The layer intensity
can be changed by tweaking the slider that appears only on the active
layer.
Tapping on a layer will make it the active layer.
Double tapping the name of the active layer will show an input box to
change its name.
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CHAPTER 7. LAYERS
New layers can be created by pressing the
toolbar.
button in the Layers menu
All layers can be flattened by pressing the
toolbar.
button in the Layers menu
Chapter 8
Materials
Materials define the way objects look in forger . The material editor allows users to create new materials, modify existing ones, assign materials to
objects and save them to the material library for later use.
8.1
Creating Materials
button in the top right
New materials can be created by pressing the add
corner. The interface will pop up an input alert asking the user for a material
name, after accepting the name, the view will move into editing mode.
When in editing mode, the user can delete materials by pressing the trash
button. The default material can not be deleted.
8.2
Editing Materials
Currently only three attributes of the material can be edited.
• Diffuse: Defines the object’s color when a light is emitted onto its
surface.
• Specular: Defines the effect the material has on the reflected light.
• Shininess: Controls the size and brightness of the specular reflection.
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8.3
CHAPTER 8. MATERIALS
Using materials
Materials can be applied to selected objects by pressing the ”Apply to Selection” button. Materials will need to be reapplied to the objects using them
if the diffuse color changes.
A material can be saved to the material library by pressing the save button in the lower left corner in edit mode, this materials properties will be
remembered between different sessions.
Any forger scene, new or old will contain a material named ”default”, this
material can not be deleted, but can be modified and saved to the library to
be remembered between sessions, allowing the user to define the properties
of the material that all new objects will use by default when imported.
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